<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <!--%PUBLIC_URL%表示public文件夹的路径-->
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
    <!--用于开启理想视口，用于移动端页面的适配-->
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <!--用于配置浏览器地址栏的颜色（仅支持安卓手机浏览器）-->
    <meta name="theme-color" content="#000000" />
    <!--描述网页信息的-->
    <meta
      name="description"
      content="Web site created using create-react-app"
    />
    <!--用于指定网页添加到手机主屏幕后的图标（仅仅支持ios）-->
    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
    <!--
      manifest.json provides metadata used when your web app is installed on a
      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
    -->
    <!--应用加壳时候的配置文件 -->
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
    <!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.

      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->
    <title>React App</title>
  </head>
  <body>
    <!-- 浏览器不支持JS的运行的时候展现 -->
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
  </body>
</html>
